Sluice or gate valve



ligatented liebt i5, i923.

JOHN lll/'ILLlAl- "WLLIAMSGN, OF WESTHRTGN,

SCOTLAND.

SLUCE OR GATE VALVE.

Application filed December le, 1920.

T o @ZZ w )tom it may concern Be it known that I, JOHN illimitati' REAllTiLLiAMsoN, a subject of the King of the United Kingdom oi GreatBritain and lreland,r and residing at lllesterton, Dumbartonshire,Scotland, have invented a. certain new and useful improvement in Slniceor Gate Valves, of Which the following is a specilication.

The subject of this invention is a sluice or gate valve the closing ofwhich under the action of a spring is controlled from a remote position.

The present invention consists in the einployment of toggle mechanismadapted, when straight, to hold the valve in open position and capableof being bent by means operable from a dist-ance so as to permit thevalve to close under the action ot the spring.

The invention is illustrated in the accoinpanying dranf'ings in whichFig. l is an elevation partly in section and Fig. Q is an elevationpartly in section at right angles to Fig. l.

As shown, the valve l fitted to the spindle 'l is urged by a spring 2towards closed position and is sustained normally in open position by atoggle meclianism comprising upper toggle links 3 pivoted to a. crosshead secured to the valve spindle 'l and lower toggle links 5 pivoted atG on the valve casing 7, and connected at S to the upper toggle links.To the connection 8 are attached tripping arms l0 which are connected toa cord or Wire 13 wrapping the pulley i4; and operable troni a distanceyThe tripping arms l0 are adapted to swing int-o an inop-- erativeposition in which the enter end oit each t i ping arm engages a ledge'll on the valve casing `whereby the toggle device. is prevented 'tronibecoming accidentally bent. For holding the toggle mechanism insubstantiallyv straight position slightly beyond the dead centre, thereare termed on the valve casing lugs l2 against which abut the lowertoggle links 5.

lt will be understood that, when the valve is to be closed the cord 13is tensioned, whereby the tripping arms l0 are first brought out ofengagement with the ledge ll and are then moved to bend the toggleoSerial No'. 430,645.

l claim l. rlhe combination oit' a valve, a spring for closing thevalve, a toggle device serving when substantially straight to hold thevalve in open position. and means operable troni a. distance tor bendingthe toggle to permit the spring to close the valve.

2. Valve mechanism comprising the comu bination of a valve, meanstending to hold the valve in closed position, and a toggle which whensubstantially straight holds the valve in open position, and means i'orbending` the toggle to permit the valve to close.

3. Valve mechanism ooi-nprising the coin bination oit a valve, meanstending to hold the valve in closed position, and a toggle which whensubstantially straight holds the valve in open position, locking meansfor preventing accidental bending` ot the toggle, and means torrendering the locking means inoperative and bending the toggle to permitthe valve to close.

4t. "i/Talve mechanism comprising the coinbination ot a valve, meanstending to hold the valve in closed position, a toggle which when insubstantially straight position slightly beyond the dead center holdsthe valve in open position, means for limiting the lilending ot thetoggle beyond this substantiall straight position in one direction, andmeans tor bending the toggle in the other direction to permit the valveto close.

5. Valve mechanism comprising the combination of a valve, a springtending to hold the valve in closed position, a toggle which when insubstantially straight position bevond the dead center holgl.; (be valvein iiniiling the bendiligv ond this subs rIntially c, lir tion, a:ipping Ytoi preventi o accidental bending ol: the toggle in, the otherdirection, and means For tripping the tripping :ivm and bending thetoggle beyond the d :ad center to permit tbc spring to close the valve.

ln testimoniY whereof l; have signed my naine to this speoilication inthe presence oit 'tivo subscribing witnesses.

a sito p Witnesses KATE GOTHINGHAM, leasen Rrrenm.

